Hydrocarbon-engine



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R. ALDRIGH.

HYDROGARBON ENGINE.

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R. ALDRICH.- HYDROGARBON ENGINE.

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R. ALDRIGH. HYDROGARBON ENGINE.

No. 411,914. Patented Oct. 1, 1889 Jqarney.

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PATENT Erice.

ROBERT ALDRICH, OF MILLVILL, MASSACHUSETTS.

HYDROCARBON-ENGINE.

SPECIFICATION forming part of Letters Patent No. 411,914, dated Octoberl, 1889.

Application filed October 5, 1888.

To all whom t may concern.'

Be it known that I, ROBERT ALDRICH, a citizen of the United States,residing at Millville, in the county of Vforcester and State ofMassachusetts, have invented certain new and useful Improvements inI-lydrocarbon-Fngines; and I do declare the following to be a fulhclear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in gas-engines; and it consistsin certain constructions and combinations of parts hereinafter setforth. n

In the annexed drawings, Figure l is a vertical central section througha twin-cylinder engine embracing my improvements. Fig. is averticalsection through the gas-feeding valves, with contiguous parts inelevation. Fig. 3 is a detail section through one of the lightingdevices. Fig. i is a plan view of the engine, with the crank-shaft andpiston removed. Fig. 5 is a bottom plan View. Fig. 6 is a plan viewshowing the main cylinders in outline, and the inlet and outlet partsand tubes of the latter cylinders in dotted lines.

Mounted on a suitable base A are twin cylinders B C, and the latter areprovided with trunk-pistons D E, respectively. To the pistons aresecured the pitinen F, attached to a crank-shaft G, the latter beingjournaled in bearings Il, mounted on standards I. The cylinders aresurrounded by water-jackets K, and the pistons have reduced upper partsL, which pass through openings in the cylinderheads, and are theresurrounded by glands M and packing, so that the space between thereduced portion of each piston and the corresponding cylinder forms achamber N for the reception of the explosive mixture of gas and air, forthe purpose hereinafter explained.

Between the main cylinders are the valveeylinders O 0', provided,respectively, with piston-valves P P', open at the upper end, andconnected to a rock-lever R, operated by an eccentric S, to which it isconnected by a rod T. The cylinder O is connected to the chamber N ofthe cylinder C by a port or passage U, and back of the said portreceives one end of a pipe V, the course of which is shown in dottedlines, Fig. 6. The cylinder serial No. esmero. (No model.)

O is connected to the chamber N of the cylinder B by a port or passageU,and back of said port receives one end of a pipe V. (See Figs. 2 and6.)

Near the inner end of the piston-valve P is a part XV, Which during acertain part of the stroke is brought opposite a port or passage X,opening directly into a chamber Y, formed in one side of the piston I).The piston-valve P has a similar port T', communieating during a portionof the stroke with a port X', which in turn leads directly into thechamber Y in the piston E. The chamber Y in each piston D E opens intothe interior of the cylinders through a port Z. The recess Y issufficiently long to keep it in communication with the said port-Xduring the entire stroke of the said piston.

On the opposite side of each main cylinder is a port c and acorresponding port b in the piston. The port a opens into a chamber c,which contains a jet d of lighted gas (shown in Fig. 8) for the purposeof igniting the charge when in the main cylinder. Each chamber c has acontiguous chamber c, also containing a lighted jet f. The casing of thechamber e is arranged to rock on a longitudinal axis, so as to bring anopening therein opposite an opening 72, in the casing of the chamber c.The movable casing is connected by a rod t' to an eccentric 7c. on thecrank-shaft G. The rod t' carries an adjustable toe Z, arranged toengage a projection m on an air-inlet valve 'n to the pipe V, aforesaid.The pipe V, near the air-inlet, is entered by a pipe p, which conveyshydrocarbon fluid from a reservoir to the pipe V.

It will be understood that the foregoing description of details relatesto one of the main engine-cylinders only, and that the construction ofthe parts connected with the other cylinder are identical.

The bottom of each cylinder B Gis provided with an opening' lr for theescape of burned gases, for the discharge of a charge of gas that mayhave failed to ignite, or Vas an airvalve. Each opening r is providedwith a valve s, the spindle of which is surrounded by a spring t. TheValves are alternately raised by arms on a rock-lever u, actuated by apitman c, connected to one of the pistons P.

Supposing an explosion has taken place in IOO cylinder C, the operationis as follows: The piston E is forced forward and the piston D in thecontrary direction, or backward. Vhen the piston D begins its backwardmovement, the piston-valve P is in the position shown in Fig. 2, withthe port W opposite vthe port X, and hence the chamber N of the cylinderC is in communication with the interior of the piston B. The gas in thesaid chamber N will thus be forced by the piston Einto the piston B. Theeccentric S will slowly move the piston-valve P inward until the port Xis closed to its interior, and this will occur before an explosion cantake place in piston D, thus shutting off all communication between acylinder in which an explosion is about to take place and thegas-chamber from which it receives its supply. As the piston D movesbackward (the pipe V' and port U' being in communication through thecylinder 0') the mixed gas and air from the pipe V' will be drawn intothe chamber N in front of the said piston. It will be understood thatthe eccentric 7c has moved the rod t' and opened the valve n, during theabove-described operation, so that air is drawn into the pipe V,together with the hydrocarbon from the pipe p. Vhen the piston. D hascompleted its backward movement and is in the position shown in Fig. l,the port b is open to the port a in the chamber c, while the casing ofthe chamber e has been moved by the rod e', so that the opening 7L isclosed. The explosion then takes place, forcing the piston D outward,and the above-described operation is repeated in the cylinder C and itsconnections. During the y backward movement of the piston D the valve gjet f, since the movable casing is turned by the rod i and its eccentricsufficiently to make the openings g and h coincide. When the explosiontakes place, the passage is closed.

It will be noted that as one main piston is moving upward it serves tofill the other cylinder with the explosive mixture, so that the force ofthe. explosion is utilized throughout the upstroke of the piston.

Having described my invention, what I claim is- 1. In a gas-engine, thecombination of the cylinders B C, trunk-pistons with contracted portionsforming chambers, and with recesses, as described, the cylinders O O',with piston-valves P P', provided with ports U U and WV W', the pipes VV', with iiuid and air inlets, means, substantially as described, foroperating the piston-valves P P', and igniting-j ets d, communicatingthrough ports with the cylinders, as set forth.

2. In. a gas-engine of the character described, the combination of thepipe V, the fiuid-supplypipe 1J, the air-valve n, and a tripping deviceapplied to the rod t' of the lighting device, substantially asdescribed.

3. In a gas-engine, the combination of cylinders B C, trunk-pistonshaving contracted portions forming elongated chambers Y, the cylinders OO', provided with piston-valves P P', ported at U-U' W' WV', the pipes VV', having uid and air inlets, the portsZ Z X X', and means,substantially as described, for operating said valves P P', andigniting-jets d, communicating through ports with the cylinders, asspecified.

4:. The combination of the cylinders B C, the trunk-pistons constructed,as described, with recesses Y. and ports Z b, the ported cylinders c c,communicating with each other and with the ports b, and gas-jets in saidcylinders, for the purpose specified.

In testimony whereof I affix my signature i in presence of twowitnesses.

ROBERT ALDRICH.

Witnesses:

DAVID MANNING, Jr., WILLIS E. SIBLEY..

